Sleeping bag

The utility model discloses an arc peripteral showcase, which forms a semicylinder, and the back side of the showcase is provided with a cuboid groove which penetrates vertically the arc peripteral showcase. The utility model is used for shielding unnecessary protrusions on inner walls of an exhibition hall. The upper part is provided with an exhibition window, and the lower part is provided with a support table; the exhibition window is provided with a pellucid clapboard, which is provided with a circular arc glass baffle plate in the middle, both sides are provided with circular arc glass doors, and the top part is provided with reflector lamps. The utility model can shield effectively unnecessary protrusions on inner walls of an exhibition hall, and has a novel and unique shape; people can observe exhibits clearly in a large angle, and visual impressibility is strong; the reflector lamps on the top part cause the light to irradiate exhibits to increase visual effects, and the utility model can protrude effectively features of external shapes of exhibits.